A website administrator wants a digital certificate that requires more rigorous checks. What could the administrator try to use?

The choice of an Extended Validation (EV) certificate is the best option for a website administrator looking for a digital certificate that mandates more rigorous checks. EV certificates are designed to provide a higher level of security and trust, as they involve a thorough vetting process by the Certificate Authority (CA) before issuance. This process includes verifying the organization's legal, physical, and operational existence, ensuring a higher level of assurance about the entity's identity.

EV certificates also prominently display the organization's name in the address bar of supporting browsers, which can help build user trust and reduce the risk of phishing attacks. Since the requirement is for a certificate that necessitates more stringent checks, choosing an EV certificate aligns perfectly with that need, making it ideal for businesses that prioritize security and trustworthiness in their digital communications.